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Finding the Fourth Proportional to 296,948.40, 445,480.20 and 128,468.40

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Solution

The fourth proportional to 296,948.40, 445,480.20 and 128,468.40 is: 192,727.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,948.40 : 445,480.20 = 128,468.40 : x
  2. Step 2: Convert to fraction form
    296,948.40/445,480.20 = 128,468.40/x
  3. Step 3: Cross multiply
    296,948.40x = 445,480.20 × 128,468.40
  4. Step 4: Simplify right side
    296,948.40x = 57,230,128,525.68
  5. Step 5: Solve for x
    x = 57,230,128,525.68/296,948.40
  6. Step 6: Final answer
    x = 192,727.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.